The Tate said:XM
6,500,000-
3,229,124 =
3,270,876 added since 2004
Sirius
4,200,000 -
1,143,258=
3,056,742 added since 2004
XM has added more since 2004? by 214134 or am I missing something?
I think the point here would be that Sirius has tripled their customer base in that time where as XM has doubled their base. I think your comparison is valid, but I think the bigger picture is that the rate of increase has been much higher on the Sirius side.
I am not trying to spin your comments, just pointing out how I am viewing the data. Also, it should be great news to both companies as their customer base is increasing, which is validation for customers like myself who wondered if my investment was going to be a VHS/Beta type situation.